To show only the files you want, use the checkboxes in the sidebar. For other MariaDB releases, click on "View All Releases". For faster downloads choose a mirror close to you.
It can take up to 24 hours for all mirrors to have all of the files in a release. If your chosen mirror does not have the file you are trying to download, return here and choose a different mirror from the list at the bottom of the right-hand column. The OSUOSL mirror is the primary mirror, so if no mirrors in your area of the world have the files, try that one (you might have to click the "Show All Mirrors" button to see it).